Granville nutting



(No Model.)

G. NUTTING.

PINION HOLDER FOR PINION POLISHING MACHINES.

No. 410,558. Patented Sept. 3, 1889.

WITNESS'ES W A INVENTOR- nomad UNITED STATES PATENT OFFICE.

GRANVILLE NUTTING, OF \VALTHAM, MASSACHUSETTS, ASSIGN OR TO THE UNITEDSTATES \VATOH COMPANY, OF SAME PLACE.

PlNlON-HOLDER FOR PlNlON-POLISHING MACHINES.

SPECIFICATION forming part of Letters Patent No. 410,558, datedSeptember 3, 1889. Application filed April 29, 1889. Serial No. 309,091.(No model.)

To all whom it may concern.-

Be it known that I, GRANVILLE NUTTING, of the city of Valtham, in thecounty of Middlesex and State of Massachusetts, have invented 5 certainnew and useful Improvements in Pinion-Holders for Pinion-Polishin gMachines, of which the following is a full, clear, and exactdescription.

This-invention relates to a holder for holding and supportingpinions--such as pinions of watch-move1nentsfor the leaves to bepolished. This improved pinion-holder is composed of a block shaped topartially surround the edge or perimeter, and thus to support I 5 thepinion with the upper portion of its perimeter exposed for the polishingdevice to act on its leaves, a carrier for said pinionholding block andon which the block is vertically adjustable, a guideway to receive saidcarrier and along which it is adjustable, and two heads at opposite endportions of said guideway and on opposite sides of the pinionholdingblock and adjustable lengthwise of said guideway to serve as endbearings for the opposite end pivots of the pinion, substantially ashereinafter described.

I11 the drawings forming part of this specification, Figure 1 is a planview. Fig. 2 is a side elevation. Fig. 3 is a central longitudi- 0 nalvertical section, line 3 3, Fig. 1. Fig. a is a transverse verticalsection, line a 4, Fig. 3.

In the drawings, A is the block to support and hold the pinion. B is thecarrier for block A. C is the guideway, and D D are two 3 5 heads atopposite end portions of the guideway, together making the pinion'holderof this invention, and severally specially constructed and relativelyarranged as now to be described.

0 The pinion-holdin g block A has a recess a shaped to partiallysurround the edge or perimeter, with a portion (the upper) of the edgeof the pinion A exposed for its leaves to be polished by the polishingdevice, and all other- 5 wise to hold and support the pinion at its edgeor perimeter against the thrust and work of the polishing devicedownward on the pinion.

The block A is contained in the carrier B,

on which it is vertically adjustable by means of a set-screw Z), whichworks on the under end of the block and screws through the bottom of thecarrier, with its head presented at an opening (1 of the guideway.

The carrier B is held 011 a base-plate B Figs. 1 and 3, which fits theway of the guideway 0. Again, the base-plate B has a slot B running inthe direction of the guideway C, Fig.

f is a headed screw, which is entered through the slot B 01": base-plateB and is screwed into the guideway O and its head brought to a bearingagainst the upper side of the baseplate, thus fastening the carrier B onthe guideway C. By loosening the set-screw f the carrier can be thenadjusted lengthwise of the guideway O, and by then tightening the saidscrew made secure against movement.

Each head D D is at the end of a horizontal screw-threaded rod g,screwing through vertical blocks E E having slotted base-plates F Freceiving headed screws h h, screwing into the base-plate of theguideway C, and thus each head D D is adjustable lengthwise of theguideway and independently of each other, not only directly on theguideway, but also on the block carrying it. mm are headed set-screws tofasten rods 9 after adjustment.

The heads D D are on opposite sides of the pinion-holding block A and atopposite end portions of the guideway C, and in position to make abearing for the pivots k 70 at opposite sides of the pinion A, and allso as to resist the thrust and work of the polishing device on andlengthwise of the pinion-leaves. 8 5

The pinion-holder herein described, obviously, is to be used in apinion-polishing machine of suitable construction.

Preferably, as has been explained, the pinion-holding block A and theblocks E E carrying the heads D D are independently adjustablelengthwise of the slotted guideway 0 common to them.

Having thus described my invention, what I claim, and desire to secureby Letters Patcut, is-

1. A holder for pinionsior leaves of pinions to bepolished, composed ofablock A to hold and support the pinion at and with a portion of itsperimeter exposed, and heads we D D on opposite sides of thepinion-holding block A, in combination With a guideway 0, having theblock and heads D D held thereon, substantially as described, for thepurpose specified.

2. A holder for pinions for leaves of pinions to be polished, composedof a block Ato hold and support the pinion at and with a portion of itsperimeter exposed, a carrier 13 for said block A, and the blockadjustable vertically thereon, and heads D D on opposite sides of thepinion-holding block A, in combination with a guideway 0, having theblock and heads D D held thereon, substantially as described, for thepurpose specified.

3. A holder for pinions for leaves of pinnesses.

GRANVILLE NUTTIN G.

Witnesses:

ALBERT W. BROWN, FRANCES M. BROWN.

